function changecolor(name) {
	document.getElementById(name).style.color="#d29b18";
	document.getElementById(name).style.backgroundImage = 'url(/site/img/arrows_over.gif)';
}
function changeback(name) {
	document.getElementById(name).style.color="#364b8c";
	document.getElementById(name).style.backgroundImage = 'url(/site/img/arrows_out.gif)';
}
function changecolor_opened(name) {
	document.getElementById(name).style.color="#d29b18";
	document.getElementById(name).style.backgroundImage = 'url(/site/img/arrows_open_over.gif)';
}
function changeback_opened(name) {
	document.getElementById(name).style.color="#364b8c";
	document.getElementById(name).style.backgroundImage = 'url(/site/img/arrows_open_out.gif)';
}
function changecolorsub(name) {
	document.getElementById(name).style.color="#d29b18";
}
function changebacksub(name) {
	document.getElementById(name).style.color="#aaa";
}
function changecolorsub_active(name) {
	document.getElementById(name).style.color="#364b8c";
}
function changebacksub_active(name) {
	document.getElementById(name).style.color="#d29b18";
}

if (document.images) {
  preload_image_object = new Image();
  // set image url
  image_url = new Array();
  image_url[0] = "/site/img/arrows_over.gif";
  image_url[1] = "/site/img/arrows_open_over.gif";
  image_url[2] = "/site/img/menu_tab_01_on.gif";
  image_url[3] = "/site/img/menu_tab_02_on.gif";
  image_url[4] = "/site/img/menu_tab_03_on.gif";
  image_url[5] = "/site/img/menu_tab_04_on.gif";

   var i = 0;
   for(i=0; i<=5; i++) 
	 preload_image_object.src = image_url[i];
}